Ingredients

Steps

• Preheat the oven to 180°C.
• Melt the butter in a saucepan and stir in flour to form a paste.
• Remove from heat and gradually whisk in the milk and cream.
• Return to heat and stir until the mixture thickens.
• Simmer for five minutes with cheese, mustard, salt, and pepper.
• Boil quartered Brussels sprouts in salted water for 3 to 4 minutes and drain.
• Place sprouts in a gratin dish and cover with the cheese sauce.
• Bake for 8 to 10 minutes until golden-brown and garnish with chives.